Piperidine compositions for light stabilization
US4419472A · kind A · utility
17Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1981 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Nov 16, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D7/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to ester mixtures of polyalkylpiperidine derivatives of the formulae I and II ##STR1## in which R.sub.1 is hydrogen or methyl, R.sub.2 is hydrogen, C.sub.1-12 alkyl, C.sub.3-8 alkenyl, C.sub.7-11 aralkyl, cyanomethyl or C.sub.2-4 acyl, R.sub.3 is C.sub.1-18 alkylene, C.sub.2-18 oxaalkylene, Chd 2-18 thiaalkylene, C.sub.2-18 azaalkylene or C.sub.2-8 alkenylene and R.sub.4 is C.sub.1-4 alkyl. These mixtures are suitable as stabilizers for plastics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.